Vulkan Renderer missing on NVIDIA driver version 390.65 [Fix found]

GeForce 390.65 installed, followed Ani's instructions with Regedit and also the vulkaninfo.exe.
Doesn't work, while Dolphin still offers Vulkan.
Any idea???

Did you follow Ani's steps to the letter, or did you use your own path?

If you followed Ani's, then it could be the path to the file is wrong.
When you run vulkaninfo.exe, does it says "loaderGetDeviceRegistryEntry: Located json file..." at one of the lines at the start?

Thanks for your advice! Yes i used the letter version.
Now I found that i have 2 versions of Vulkan.
One is 1.0.3.0 with the first 29 lines of vulkaninfo:
===========
VULKAN INFO
===========

Vulkan API Version: 1.0.3

INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_10DE&DEV_1292&SUBSYS_380917AA&REV_A1\4&22495785&0&0008
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Device ID(1) Does not contain a value for "VulkanExplicitLayers"
INFO: [loader] Code 0 : loaderGetRegistryFiles: unable to open child-device error:13
INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_8086&DEV_0416&SUBSYS_380917AA&REV_06\3&11583659&0&10
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Device ID(2) Does not contain a value for "VulkanExplicitLayers"
INFO: [loader] Code 0 : loaderGetRegistryFiles: Opening child device 3 - DISPLAY\CMO1726\4&399B6406&0&UID265988
WARNING: [loader] Code 0 : loader_get_manifest_files: Registry lookup failed to get layer manifest files.
INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_10DE&DEV_1292&SUBSYS_380917AA&REV_A1\4&22495785&0&0008
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Located json file "C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_3e0ccd5eb9f5a1e6\nv-vk64.json" from PnP registry: VulkanImplicitLayers
INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_8086&DEV_0416&SUBSYS_380917AA&REV_06\3&11583659&0&10
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Device ID(2) Does not contain a value for "VulkanImplicitLayers"
INFO: [loader] Code 0 : loaderGetRegistryFiles: Opening child device 3 - DISPLAY\CMO1726\4&399B6406&0&UID265988
INFO: [loader] Code 0 : Found manifest file C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_3e0ccd5eb9f5a1e6\nv-vk64.json, version "1.0.0"
INFO: [loader] Code 0 : Meta-layer VK_LAYER_LUNARG_standard_validation all 0 component layers appear to be valid.
INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_10DE&DEV_1292&SUBSYS_380917AA&REV_A1\4&22495785&0&0008
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Located json file "C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_3e0ccd5eb9f5a1e6\nv-vk64.json" from PnP registry: VulkanDriverName
INFO: [loader] Code 0 : loaderGetRegistryFiles: opening device PCI\VEN_8086&DEV_0416&SUBSYS_380917AA&REV_06\3&11583659&0&10
INFO: [loader] Code 0 : loaderGetDeviceRegistryEntry: Device ID(2) Does not contain a value for "VulkanDriverName"
INFO: [loader] Code 0 : loaderGetRegistryFiles: Opening child device 3 - DISPLAY\CMO1726\4&399B6406&0&UID265988
INFO: [loader] Code 0 : Located json file "C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nv-vk64.json" from registry "HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\Vulkan\Drivers"
INFO: [loader] Code 0 : Found ICD manifest file C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_3e0ccd5eb9f5a1e6\nv-vk64.json, version "1.0.0"
ERROR: [loader] Code 0 : loader_get_json: Failed to open JSON file C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nv-vk64.json
INFO: [loader] Code 0 : Insert instance layer VK_LAYER_NV_optimus (C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_3e0ccd5eb9f5a1e6\.\nvoglv64.dll)


The other version is 10.0.65.0 and the first 23 lines of vulkaninfo are:
===========
VULKAN INFO
===========

Vulkan API Version: 1.0.65

WARNING: [loader] Code 0 : loader_get_manifest_files: Registry lookup failed to get layer manifest files.
ERROR: [loader] Code 0 : loader_get_json: Failed to open JSON file C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nv-vk64.json

Instance Extensions:
====================
Instance Extensions count = 11
VK_EXT_debug_report                 : extension revision  9
VK_EXT_display_surface_counter      : extension revision  1
VK_KHR_get_physical_device_properties2: extension revision  1
VK_KHR_get_surface_capabilities2    : extension revision  1
VK_KHR_surface                      : extension revision 25
VK_KHR_win32_surface                : extension revision  6
VK_KHX_device_group_creation        : extension revision  1
VK_KHR_external_fence_capabilities  : extension revision  1
VK_KHR_external_memory_capabilities : extension revision  1
VK_KHR_external_semaphore_capabilities: extension revision  1
VK_NV_external_memory_capabilities  : extension revision  1

I'll try to understand what you mean and will search on.
But i'm always full of thanks for other ideas.

(Sorry for my post, its my first membership  in a forum and english is my second foreign language) :-(